Added a readme for the changelogs

changelogs/README.md

@@ -2,8 +2,8 @@
 
 In this directory, there are is set of sub-folders for each NuGet package - each containing a set of API diffs for each release.
 
- * **[SkiaSharp](SkiaSharp/README.md)**
- * **[SkiaSharp.Views](SkiaSharp.Views/README.md)**
- * **[SkiaSharp.Views.Forms](SkiaSharp.Views.Forms/README.md)**
- * **[SkiaSharp.HarfBuzz](SkiaSharp.HarfBuzz/README.md)**
- * **[HarfBuzzSharp](HarfBuzzSharp/README.md)**
+ * **[SkiaSharp](SkiaSharp)**
+ * **[SkiaSharp.Views](SkiaSharp.Views)**
+ * **[SkiaSharp.Views.Forms](SkiaSharp.Views.Forms)**
+ * **[SkiaSharp.HarfBuzz](SkiaSharp.HarfBuzz)**
+ * **[HarfBuzzSharp](HarfBuzzSharp)**